Export of BGP Community Information in IP Flow Information Export (IPFIX)
RFC 8549

Document Type RFC - Proposed Standard (April 2019; No errata)
Last updated 2019-04-02
Replaces draft-li-opsawg-ipfix-bgp-community
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Tianran Zhou
Shepherd write-up Show (last changed 2018-08-13)
IESG IESG state RFC 8549 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Ignas Bagdonas
Send notices to Tianran Zhou <zhoutianran@huawei.com>
IANA IANA review state IANA OK - Actions Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                             Z. Li
Request for Comments: 8549                                         R. Gu
Category: Standards Track                                   China Mobile
ISSN: 2070-1721                                                  J. Dong
                                                     Huawei Technologies
                                                              April 2019

                 Export of BGP Community Information in
                   IP Flow Information Export (IPFIX)

Abstract

   By introducing new Information Elements (IEs), this document extends
   the existing BGP-related IEs to enable IP Flow Information Export
   (IPFIX) to export BGP community information, including the BGP
   Standard Communities defined in RFC 1997, BGP Extended Communities
   defined in RFC 4360, and BGP Large Communities defined in RFC 8092.
   According to the network operator's BGP community planning, network
   traffic information can then be accumulated and analyzed at the BGP
   community granularity, which represents the traffic of different
   kinds of customers, services, or geographical regions.  Network
   traffic information at the BGP community granularity is useful for
   network traffic analysis and engineering.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8549.

Li, et al.                   Standards Track                    [Page 1]
RFC 8549            Export of BGP Community in IPFIX          April 2019

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................5
   3. Traffic Collection Based on BGP Community .......................6
   4. IEs for BGP Standard Community ..................................7
   5. IEs for BGP Extended Community ..................................8
   6. IEs for BGP Large Community .....................................8
   7. Operational Considerations ......................................9
   8. Security Considerations ........................................10
   9. IANA Considerations ............................................11
   10. References ....................................................13
      10.1. Normative References .....................................13
      10.2. Informative References ...................................14
   Appendix A.  Encoding Example .....................................16
     A.1.  Template Record ...........................................16
     A.2.  Data Set ..................................................17
   Acknowledgements ..................................................18
   Authors' Addresses ................................................18

Li, et al.                   Standards Track                    [Page 2]
RFC 8549            Export of BGP Community in IPFIX          April 2019

1.  Introduction

   IP Flow Information Export (IPFIX) [RFC7011] provides network
   administrators with traffic flow information using the Information
   Elements (IEs) defined in the "IPFIX Information Elements" registry
   [IANA-IPFIX].  Based on the traffic flow information, network
   administrators know the amount and direction of the traffic in their
   network and can then optimize the network when needed.  For example,
   the collected information could be used for traffic monitoring and,
   optionally, for traffic optimization according to the operator's
   policy.

   The "IPFIX Information Elements" registry [IANA-IPFIX] defines the
   following IEs for traffic flow information export in different
   granularities: sourceIPv4Address, sourceIPv4Prefix,
   destinationIPv4Address, destinationIPv4Prefix, bgpSourceAsNumber,
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